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# EMERGENCY



# ALERT SERVICE BULLETIN

SUBJECT: ROTOR FLIGHT CONTROLS - Single hydraulic main and tail servo-controls

Replacement of the "SAMM", "TRW", "GOODRICH" and "UTAS" main single

hydraulic and tail servo-controls e quipped with non-compliant input lever

articulation bearings.

AIRCRAFT

CONCERNED NUMBER Version(s)

Civil Militar y

350 67.00.60 B, BA, BB, B1, B2, B3, D L1

550 67.00.36 A2, C2, C3, U2

355 67.00.41 E, F, F1, F2, N, NP

555 67.00.27 AF, AN, SN, UF, UN



### Revision No. Date of issue

Revision 0 2013-04-15



### Summary:

Compliance with this ALERT SERVICE BULLETIN consists in identifying and replacing the servo-control(s) whose

input lever bearing is non-compliant.



### Compliance:

EUROCOPTER renders compliance with th is ALERT SERVICE BULLETIN mandatory. For the attention of

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### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A.1. Helicopters/installed equipment

- Helicopters equipped with single hydraulic main an d/or tail servo-controls, manufactured by "SAMM",

"TRW", "GOODRICH" or "UTAS".



### NOTE 1

Refer to the Log Cards (FM) to identify the actual

configuration of the helicopter.

1.A.2. Non-installed equipment

- Single hydraulic main and tail servo-controls, manufa ctured by "SAMM", "TRW", "GOODRICH" or "UTAS".



### 1.B. ASSOCIATED REQUIREMENTS

Not applicable.



### 1.C. REASON

During acceptance tests of a servo-control, the supplier noticed that the servo-contro l input lever bearing had

a play value exceeding the specified value.

The increase in this play leads to excessive misalig nment between the lever and distributor slide, potentially

leading to the buttressing of the distributor slide in its sleeve.

This buttressing would create a "friction point" on t he flight controls, which could be revealed during a

pre-flight hydraulic test.

In order to eliminate the risk of this "friction poi nt" appearing on the flight controls, EUROCOPTER renders

the replacement and return to the manufacturer of all servo-controls with non-compliant input lever bearing

mandatory.

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### 1.D. DESCRIPTION

Compliance with this ALERT SERVICE BULLETIN consists in:

- identifying the servo-controls equipped with a non-compliant input lever bearing:

. Bearing identified by a marking (a), visibl e on the sides of its external race (b),

or, . bearing with no visible marking on the two sides of its external race (b) or on the sealing flanges (d).

- Replacing the single hydraulic main and tail serv o-controls equipped with a non-compliant input lever

bearing.



### 1.E. COMPLIANCE

EUROCOPTER renders compliance with th is ALERT SERVICE BULLETIN mandatory. a b d

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1.E.1.a. Helicopters/ installed equipment:

Before delivery:

- Consult the Log Cards (FM) and note:

. The Serial Number (S/N) of the main single hydraulic and tail servo-controls.

. The servo-control repair date, if they were repaired at the “UTC AEROSPACE SYSTEMS” premises in the

“MONROE, N/C, USA” repair station.

- If the S/N does not correspond to the S/N listed in paragraph 4.A. and the servo-control has not been

repaired in the period from September 27, 2012 to Januar y 30, 2013 by the aforementioned repair station,

the servo-control is equipped with a compliant input lever bearing.

. Comply with paragraph 3.C.

. Resume flights.

- In all other cases, check that there is a “B” marked in the area defined in paragraph 4.B.

. If there is a "B" marked, the servo-control is equipped with a compliant input lever bearing.

- Comply with paragraph 3.C.

- Resume flights.

. If there is no "B" marked.

- Comply with paragraphs 3.A ., 3.B.1., 3.B.2.a. and 3.C.

for each servo-control concerned.



### NOTE 2

A table is available in paragraph 4.C. in order to aid

compliance with the instructions given above.

Interpretation of the results:

- If the servo-control is equipped with a non-compliant bearing:

. Comply with paragraph 3.B.2.b.

- If the servo-control is equipped with a compliant bearing:

. If necessary, remove the servo-control as per AMM Task 67-32-00, 4-1 or 67-33-00, 4-1 or MET

Work Card 67.30.00.402 or 67.30.00.403.

. Identify the servo-control with the letter "B" mark ed in the area defined in paragraph 4.B., (e.g.: using

a permanent marker, as per MTC Work Card 20.08.05.103).

. If previously removed, install the servo-control as per AMM Task 67-32-00, 4-1 or 67-33-00, 4-1 or

MET Work Card 67.30.00.402 or 67.30.00.403.

. Comply with paragraph 3.B.3.

. Resume flights.

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Before delivery or installation on the helicopter:

- Consult the Log Cards (FM) and note:

. The Serial Number (S/N) of the main single hydraulic and tail servo-controls.

. The servo-control repair date, if they were repaired at the “UTC AEROSPACE SYSTEMS” premises in the

“MONROE, N/C, USA” repair station.

- If the S/N does not correspond to the S/N listed in paragraph 4.A. and the servo-control has not been

repaired in the period from September 27, 2012 to Januar y 30, 2013 by the aforementioned repair station,

the servo-control is equipped with a compliant input lever bearing.

. Leave as is.

- In all other cases, check that there is a “B” marked in the area defined in paragraph 4.B.

. If there is a "B" marked, the servo-control is equipped with a compliant input lever bearing.

- Leave as is.

. If there is no "B" marked.

- Comply with paragraphs 3.B.4.a. and 3. C. for each servo-control concerned.



### NOTE 3

A table is available in paragraph 4.C. in order to aid

compliance with the instructions given above.

Interpretation of the results:

- If the servo-control is equipped with a non-compliant bearing:

. Comply with paragraph 3.B.4.b.

- If the servo-control is equipped with a compliant bearing:

. Identify the servo-control with the letter "B" mark ed in the area defined in paragraph 4.B., (e.g.: using

a permanent marker, as per MTC Work Card 20.08.05.103).

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The work on the helicopter is to be performed by the operator.

1.E.2.a. Helicopters/ installed equipment:

Within 10 flying hours or 7 days following receipt of this ALERT SERVICE BULLETIN, issued on the date

indicated at the foot of the page:

- Consult the Log Cards (FM) and note:

. The Serial Number (S/N) of the main single hydraulic and tail servo-controls.

. The servo-control repair date, if they were repaired at the “UTC AEROSPACE SYSTEMS” premises in the

“MONROE, N/C, USA” repair station.

- If the S/N does not correspond to the S/N listed in paragraph 4.A. and the servo-control has not been

repaired in the period from September 27, 2012 to Januar y 30, 2013 by the aforementioned repair station,

the servo-control is equipped with a compliant input lever bearing.

. Comply with paragraph 3.C.

. Resume flights.

- In all other cases, check that there is a “B” marked in the area defined in paragraph 4.B.

. If there is a "B" marked, the servo-control is equipped with a compliant input lever bearing.

- Comply with paragraph 3.C.

- Resume flights.

. If there is no "B" marked.

- Before resuming flights, comply with paragraphs 3. A., 3.B.1., 3.B.2.a. and 3.C. for each servo-control

concerned.



### NOTE 4

A table is available in paragraph 4.C. in order to aid

compliance with the instructions given above.

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. If the servo-control is equipped with a non-compliant bearing:

- Before resuming flights, and until the servo-control is replaced:

. Pay particular attention to the free travel of the f light controls during each pre-flight hydraulic test

(Flight Manual, Section 4).

- If there is a "friction point" on the flight controls , comply with paragraph 3.B.2.b. before the next

flight.

- If there is no "friction point" on the flight contro ls, comply with paragraph 3.B.2.b. no later than

within 50 flying hours without exceeding 4 months following receipt of this ALERT SERVICE

BULLETIN, issued on the date indicated at the bottom of the page.



### NOTE 5

Contact EUROCOPTER as per paragraph 2.A. in order to

implement the logistics required to replace the servo-control.

. If the servo-control is equipped with a compliant bearing:

- During the next removal operation for this servo-cont rol at the latest, identify it by marking the letter

"B" in the area defined in paragraph 4.B. (e.g .: using a permanent marker as per MTC Work

Card 20.08.05.103).

- If previously removed, install the servo-control as per AMM Task 67-32-00, 4-1 or 67-33-00, 4-1 or

MET Work Card 67.30.00.402 or 67.30.00.403.

- Comply with paragraph 3.B.3.

- Resume flights.

1.E.2.b. Non-installed equipment:

Before installing the servo-control on a helicopter, or no later than within 6 months following receipt of this

ALERT SERVICE BULLETIN, issued on the date indicated at the foot of the page,

- Consult the Log Cards (FM) and note:

. The Serial Number (S/N) of the main single hydraulic and tail servo-controls.

. The servo-control repair date, if they were repaired at the “UTC AEROSPACE SYSTEMS” premises in the

“MONROE, N/C, USA” repair station.

- If the S/N does not correspond to the S/N listed in paragraph 4.A. and the servo-control has not been

repaired in the period from September 27, 2012 to Januar y 30, 2013 by the aforementioned repair station,

the servo-control is equipped with a compliant input lever bearing.

. Leave as is.

- In all other cases, check that there is a “B” marked in the area defined in paragraph 4.B.

. If there is a "B" marked, the servo-control is equipped with a compliant input lever bearing.

- Leave as is.

. If there is no "B" marked.

- Comply with paragraphs 3.B.4.a. and 3. C. for each servo-control concerned.

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### NOTE 6

A table is available in paragraph 4.C. in order to aid

compliance with the instructions given above.

Interpretation of the results:

- If the servo-control is equipped with a non-compliant bearing:

. Comply with paragraph 3.B.4.b.



### NOTE 7

Contact EUROCOPTER as per paragraph 2.A. in order to

implement the logistics required to replace the servo-control.

- If the servo-control is equipped with a compliant bearing:

. Identify the servo-control with the letter "B" mark ed in the area defined in paragraph 4.B. (e.g.: using a

permanent marker, as per MTC Work Card 20.08.05.103).



### 1.F. APPROVAL

Approval of modifications:

Not applicable.

Approval of this document:

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved

on April 15, 2013 under the authority of EASA Design Organization Approv al No. 21J.056 fo r helicopters of

civil versions subject to an Airworthiness Certificate.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved

on April 15, 2013 under the prerogatives of the recogn ition of design capability FRA21J-002-DGA for French

Government helicopters.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved

on April 15, 2013 by the EUROCOPTER Airworthi ness Department for export military versions.



### 1.G. MANPOWER

For compliance with this ALERT SERVICE BULLETIN, EUROCOPTER recommends the following personnel

qualifications:

Qualification: - 1 Mechanical Engineering Technician.

The time for the operations is given for information purposes, for a standard configuration.

Time for the operations: - 1 hour for the Mechanical Engineering Technician (Removal/Installation of the

servo-control).

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### 1.H. WEIGHT AND BALANCE

Not applicable.



### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT RECORD

Not applicable.



### 1.K. REFERENCES

The documents required for compliance with this ALERT SERVICE BULLETIN are as follows:

Helicopters, all versions:

- MTC: 20.08.05.101: Drafting and updating the Log Card (F.M.)

- MTC: 20.08.05.103: Monitoring of parts in oper ation - Marking - Service life customization

For AS350 versions B2, B3 and AS550 version C3:

- AMM: 29-00-00, 3-1: Hydraulic Power - General safe ty instructions - Hy draulic Power System

- AMM: 53-51-00, 4-1: Cowlings - Remo val / Installation - Upper cowlings

- AMM: 60-00-00, 3-1: General - Mechanics systems - Genera l safety instructions - Mechanical assemblies

- AMM: 67-00-00, 3-1: Rotor flight controls - General safety instructions - Flight controls

- AMM: 67-32-00, 4-1: Servo-controls (single Hydraulic System) - Removal/In stallation - Main Servo-controls

- AMM: 67-33-00, 4-1: Rear se rvo-control - Removal/Installation - Tail rotor servo-control

For AS350 versions B, BA, BB, B1, D, L1, AS550 versions A2, C2, U2 and AS355 versions E, F, F1, F2, N,

NP:

- MET: 29.00.00.301: Hydraulic powe r system - General instructions

- MET: 53.00.00.403: Fuselage - Engine and MGB cowlings: Removal-Installation

- MET: 67.10.00.301: Main rotor c ontrols - General instructions

- MET: 67.30.00.402: Servo-controls - Main ro tor servo-controls: Removal-Installation

- MET: 67.30.00.403: Servo-controls - Ta il servo-controls: Removal-Installation

For AS555 versions AN, SN and UN:

- MET: 29.00.00.301: Hydraulic powe r system - General instructions

- MET: 53.00.00.403: Fuselage - Engine and MGB cowlings: Removal-Installation

- MET: 67.10.00.301: Main rotor c ontrols - General instructions

- MET: 67.30.15.403: Servo-controls - Ta il servo-controls: Removal-Installation

For AS555 versions AF, UF:

- MET: 29.00.00.301: Hydraulic powe r system - General instructions

- MET: 53.00.00.403: Fuselage - Engine and MGB cowlings: Removal-Installation

- MET: 67.10.00.301: Main rotor c ontrols - General instructions

- MET: 67.30.15.403: Servo-controls - Ta il servo-controls: Removal-Installation

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### 1.L. DOCUMENTS AFFECTED

Not applicable.



### 1.M. INTERCHANGEABILITY OR MIXABILITY OF PARTS

Not applicable.

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### 2. MATERIAL INFORMATION

2.A. MATERIAL: PRICE - AVAILABILITY - PROCUREMENT

A compliant servo-control will be made available free of charge (c ost of parts and shipping) by

EUROCOPTER within the time limit according to the instructions given in this ALERT SERVICE BULLETIN.

Contact EUROCOPTER:

EUROCOPTER

Etablissement de Marignane

Direction Ventes et Relations Client (ECR)

13725 MARIGNANE CEDEX



### 2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONENT

Kits or components to be ordered for one helicopter or one assembly:

Not applicable.

Products to be ordered separately:

As per Work Cards and Tasks mentioned in this ALERT SERVICE BULLETIN.

The products can be ordered se parately, from the INTERTURBINE AVIATION LOGISTICS company.

Website: http://www.interturbine.com

Telephone: +49.41.91.809.300

AOG: +49.41.91.809.444

Special tools:

Key Word Qty Tool P/N or equivalent Item

Borescope 1 Off the shelf (zz)

Mirror 1 Off the shelf (yy)

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### 2.D. MATERIAL TO BE RETURNED

Contact Goodrich Actuation Systems in order to defin e the conditions for returning the servo-controls

equipped with a non-compliant bearing.

Key Word Qty New P/N Item Former

P/N → Instruction

Servo-control 1 to 4 See paragraph 4

(Appendix) - / Conformity carried out

by Goodrich Actuation

Systems.

Contact Goodrich Actuation Systems with the following contact information:

Goodrich Actuation Systems

Département MRO hélicoptère-Airbus

43 rue des Prés 27950 Saint Marcel – France

Telephone: +33 2.32.64.70.23

Fax: +33 2.32.64.70.01

E-mail: Fanny.Noel@utas.utc.com

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### 3. ACCOMPLISHMENT INSTRUCTIONS

3.A. GENERAL

Read and comply with the general hydraulic instructio ns as per AMM Task 29-00-00, 3-1 or MET Work

Card 29.00.00.301.

Read and comply with the general flight control instru ctions as per AMM Task 67-00-00, 3-1 or MET Work

Card 67.10.00.301.

Read and comply with the instructions concerning me chanical assemblies as per AMM Task 60-00-00, 3-1.



### 3.B. OPERATIONAL PROCEDURE

3.B.1. Preliminary steps

- Install the access equipment.

- Remove the upper cowling as per AMM Task 53-51-00, 4-1 or MET Work Card 53.00.00.403.

- Remove the front part of the tail gearbox fairing.

3.B.2. Operational procedure on installed equipment

3.B.2.a. Identification of the input leve r bearing on the single hydraulic main and tail servo-controls (Figures 1 to 3)



### NOTE 1

Photos in Figure 3 are given for information purposes in

order to illustrate two types of bearing (compliant and

non-compliant) on a lever removed from the servo-control.



### CAUTION

DO NOT USE SOLVENT OR ANY OTHER

PRODUCT TO CLEAN THE BEARING.

- If necessary, remove the excess grease from the serv o-control input lever bearing using a clean, dry cloth

as per Detail B, Figure 2.

- Make sure that there is no marking (a) on the sides of the external race (b) of the bearing as per Detail A,

Figure 1:



### NOTE 2

When there is a marking (a), it is located on one side of the

external race (b) only.

- If necessary:

. use a mirror (yy) and a light source or a borescope (zz),

or, . remove the servo-control as per AMM Task 67 -32-00, 4-1 or 67-33-00, 4-1 or MET Work

Card 67.30.00.402 or 67.30.00.403, in order to proceed with the check.

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This document is available on the internet: www.eurocopter.com/techpub . If part of the marking (a) is visible on one of the sides of the external race (b), the servo-control is

equipped with a non-compliant bearing.



### NOTE 3

The marking (a) may be partially or completely hidden from

view by the lever support (c).

- Interpret the results in accordance with paragraph 1.E.1.a. or 1.E.2.a.

. If no marking (a) is visible on the two sides of the external race, make sure that the marking (f) "RWG

GERMANY 60-5593" is partially visible on at least on e flange (d) of the bearing as per Detail C, Figure 2.



### NOTE 4

The marking (f) on the flange is spread into 3 groups located

at approximately 120 degrees from each other.

- If necessary:

. Use a mirror (yy) and a light source or a borescope (zz),

or, . remove the servo-control as per AMM Task 67 -32-00, 4-1 or 67-33-00, 4-1 or MET Work

Card 67.30.00.402 or 67.30.00.403, in order to proceed with the check.

- If part of the marking (f) "RWG GERMANY 60-5593" is visible, the servo-control is equipped with a

compliant bearing:

. Interpret the results in accordance with paragraph 1.E.1.a. or 1.E.2.a.

- If none of the marking (f) "RWG GERMANY 60-5593" is visible, the servo-control is equipped with a

non-compliant bearing:

. Interpret the results in accordance with paragraph 1.E.1.a. or 1.E.2.a.

3.B.2.b. Replacement of an installed servo-control

- Remove the main or tail servo-control concerned as per AMM Task 67-32-00, 4-1 or 67-33-00, 4-1 or

MET Work Card 67.30.00.402 or 67.30.00.403.

- Return the servo-control conc erned as per paragraph 2.D.

- Install a compliant servo-control as per AMM Ta sk 67-32-00, 4-1 or 67-33-00, 4-1 or MET Work

Card 67.30.00.402 or 67.30.00.403.

3.B.3. Final steps

- Install the front part of the tail gearbox fairing.

- Install the upper cowling as per AMM Task 53 -51-00, 4-1 or MET Work Card 53.00.00.403.

- Remove the access equipment.

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3.B.4.a. Identification of the input leve r bearing on the single hydraulic main and tail servo-controls (Figures 1 to 3)



### NOTE 5

Photos in Figure 3 are given for information purposes in

order to illustrate two types of bearing (compliant and

non-compliant) on a lever removed from the servo-control.



### CAUTION

DO NOT USE SOLVENT OR ANY OTHER

PRODUCT TO CLEAN THE BEARING.

- If necessary, remove the excess grease from the serv o-control input lever bearing using a clean, dry cloth

as per Detail B, Figure 2.

- Make sure that there is no marking (a) on the sides of the external race (b) of the bearing as per Detail A,

Figure 1:



### NOTE 6

When there is a marking (a), it is located on one side of the

external race (b) only.

. If part of the marking (a) is visible on o ne of the sides of the external race (b),

the servo-control is equipped with a non-compliant bearing.



### NOTE 7

The marking (a) may be partially or completely hidden from

view by the lever support (c).

- Interpret the results in accordance with paragraph 1.E.1.b. or 1.E.2.b.

. If no marking (a) is visible on the two sides of the external race, make sure that the marking (f) "RWG

GERMANY 60-5593" is partially visible on at least on e flange (d) of the bearing as per Detail C, Figure 2.



### NOTE 8

The marking (f) on the flange is spread into 3 groups located

at approximately 120 degrees from each other.

- If part of the marking (f) "RWG GERMANY 60-5593" is visible, the servo-control is equipped with a

compliant bearing:

. Interpret the results in accordance with paragraph 1.E.1.b. or 1.E.2.b.

- If none of the marking (f) "RWG GERMANY 60-5593" is visible, the servo-control is equipped with a

non-compliant bearing:

. Interpret the results in accordance with paragraph 1.E.1.b. or 1.E.2.b.

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- Return the servo-control conc erned as per paragraph 2.D.



### 3.C. IDENTIFICATION

Identification of this document:

. Record compliance with th is ALERT SERVICE BULLETIN:

- Indicate the number of the ALERT SERVICE BULLET IN corresponding to the helicopter concerned in

the helicopter documents,

and,

. If the S/N does not correspond to the S/N listed in paragraph 4.A. and the servo-control has not been

repaired in the period from September 27, 2012 to January 30, 2013 by “UTC AEROSPACE SYSTEMS”,

in the “MONROE, N/C, USA” repair station:

- Leave the Log Card (FM) as is.

. In all other cases:

- If there is a "B" marked and visible in the area defined in paragraph 4.B:

. Leave the Log Card (FM) as is.

- If no "B" marking is visible in the area defined in paragraph 4.B:

. For the single hydraulic main servo-controls:

- Record compliance with the ALERT SERVICE BULLETINs corresponding to the AS350 and AS550

helicopters, as well as the result of the check (compliant or non-compliant), on the Log Card (FM), as

per MTC Work Card 20.08.05.101.

. For the single hydraulic tail servo-control:

- Record compliance with the ALERT SERVICE BULLETINs corresponding to the AS350, AS355,

AS550 and AS555 helicopters, as well as the result of the check (compliant or non-compliant), on the

Log Card (FM), as per MTC Work Card 20.08.05.101.

Identification of modifica tions on the documentation:

Not applicable.



### 3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.

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Marking on one side of the bearing's exte rnal race (non-compliant servo-control)

Figure 1 

## A - B - C

a c d

b

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Grease located on the single hydraulic servo-control input lever bearing

(See Figure 1)

"RWG GERMANY 60-5593" marking partially visible on a sealing flange of the bearing

(compliant servo-control)

Figure 2 f b

d

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without marking Figure 3 Compliant servo-control:

Non-compliant servo-control: Side 2: flange with marking Side 1: flange with marking

One of the sides of the external race

with marking 

## Areas to be checked

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### 4. APPENDIX

4.A. List of single hydraulic servo-controls concerned by compliance with this ALERT SERVICE

BULLETIN

Equipment (MP/N) Serial Number (S/N)

SC5072 2921

SC5072 2961

SC5072 2962

SC5072 2966

SC5072 2967

SC5072 2968

SC5072 2971

SC5072 2972

SC5072 2973

SC5072 2974

SC5072 2975

SC5072 2976

SC5072 2977

SC5072 2978

SC5072 2979

SC5072 2980

SC5072 2981

SC5072 2982

SC5072 2983

SC5072 2984

SC5072 2985

SC5072 2986

SC5072 2987

SC5072 2988

SC5072 2989

SC5072 2990

SC5072 2991

SC5072 2993

SC5072 2994

SC5072 2995

SC5072 2996

SC5072 2997

SC5072 3000

SC5072 3004

SC5072 3005

SC5072 3009

SC5072 3010

SC5072 3012

SC5072 3013

SC5072 3014

SC5072 3016

SC5072 3020

SC5072 3022

SC5072 3024

SC5072 3027

SC5072 3028

SC5072 3031

SC5072 3032 Equipment (MP/N) Serial Number (S/N)

SC5072 3033

SC5072 3034

SC5072 3036

SC5072 3038

SC5072 3042

SC5072 3043

SC5072 3044

SC5072 3046

SC5072 3047

SC5072 3048

SC5072 3056

SC5072 3057

SC5072 3058

SC5072 3059

SC5072 3062

SC5072 3063

SC5072 3065

SC5072 3073

SC5072 3075

SC5072 3076

SC5072 3078

SC5072 3082

SC5072 3083

SC5072 3084

SC5072 3085

SC5072 3088

SC5072 3097

# EASB

Revision 0 2013-04-15 Page 21/24

This document is available on the internet: www.eurocopter.com/techpub Equipment (MP/N) Serial Number (S/N)

SC5083-1 5045

SC5083-1 5091

SC5083-1 5127

SC5083-1 5144

SC5083-1 5145

SC5083-1 5146

SC5083-1 5147

SC5083-1 5148

SC5083-1 5149

SC5083-1 5154

SC5083-1 5155

SC5083-1 5156

SC5083-1 5157

SC5083-1 5158

SC5083-1 5159

SC5083-1 5160

SC5083-1 5161

SC5083-1 5162

SC5083-1 5169

SC5083-1 5170

SC5083-1 5171

SC5083-1 5172

SC5083-1 5173

SC5083-1 5174

SC5083-1 5175

SC5083-1 5176

SC5083-1 5177

SC5083-1 5178

SC5083-1 5179

SC5083-1 5180

SC5083-1 5181

SC5083-1 5182

SC5083-1 5184

SC5083-1 5185

SC5083-1 5186

SC5083-1 5192

SC5083-1 5193

SC5083-1 5194

SC5083-1 5199

SC5083-1 5202

SC5083-1 5206

SC5083-1 5213

SC5083-1 5214

SC5083-1 5218

SC5083-1 5219

SC5083-1 5220

SC5083-1 5221

SC5083-1 5222

SC5083-1 5223 Equipment (MP/N) Serial Number (S/N)

SC5083-1 5226

SC5083-1 5245

SC5083-1 5252

SC5083-1 5262

SC5083-1 5263

SC5083-1 5268

SC5083-1 5272

SC5083-1 5273

SC5083-1 5274

SC5083-1 5275

SC5083-1 5276

SC5083-1 5277

SC5083-1 5278

SC5083-1 5279

SC5083-1 5280

SC5083-1 5281

SC5083-1 5286

SC5083-1 5292

SC5083-1 5293

SC5083-1 5294

SC5083-1 5295

SC5083-1 5296

SC5083-1 5298

SC5083-1 5301

SC5083-1 5308

SC5083-1 5310

SC5083-1 5311

SC5083-1 5312

SC5083-1 5314

# EASB

Revision 0 2013-04-15 Page 22/24

This document is available on the internet: www.eurocopter.com/techpub Equipment (MP/N) Serial Number (S/N)

SC5084-1 2695

SC5084-1 2701

SC5084-1 2702

SC5084-1 2704

SC5084-1 2714

SC5084-1 2715

SC5084-1 2716

SC5084-1 2719

SC5084-1 2720

SC5084-1 2721

SC5084-1 2722

SC5084-1 2723

SC5084-1 2724

SC5084-1 2726

SC5084-1 2751

SC5084-1 2754

SC5084-1 2756

SC5084-1 2757

SC5084-1 2776

SC5084-1 2777

SC5084-1 2780

SC5084-1 2781

SC5084-1 2786

SC5084-1 2787

SC5084-1 2788

SC5084-1 2789

SC5084-1 2790

# EASB

Revision 0 2013-04-15 Page 23/24

This document is available on the internet: www.eurocopter.com/techpub Identification plate 

### 4.B. Letter "B" marking area

Letter "B" marking area on the identific ation plate of the single hydraulic main and tail servo-controls equipped

with a compliant bearing.



### NOTE 1

When a main single hydraulic servo-control or tail servocontrol is compliant, or during the process to make it

compliant, it is identified by a "B" marked on its identification

plate.



## D



# B

Letter "B" marking area

# EASB

Revision 0 2013-04-15 Page 24/24

This document is available on the internet: www.eurocopter.com/techpub 

### 4.C. Table

The servo-control was not repaired

during the period from

September 27, 2012 to January 30,

2013 at “UTC AEROSPACE

SYSTEMS” premises in the

“MONROE, N/C, USA” repair

station. The servo-control was repaired

during the period from

September 27, 2012 to January 30,

2013 at the “UTC AEROSPACE

SYSTEMS” premises in the

“MONROE, N/C, USA” repair

station.

The servo-control S/N does not

correspond to the S/N listed in

paragraph 4.A. Helicopters/installed equipment

The servo-control is equipped with

a compliant input lever bearing,

comply with paragraph 3.C. then

resume flights.

Non-installed equipment

The servo-control is equipped with

a compliant input lever bearing,

leave as is.

The servo-control S/N

corresponds to the S/N listed in

paragraph 4.A. Helicopters/installed equipment

- If there is a "B" marked, the servo-co ntrol is equipped with a compliant

input lever bearing.

. Comply with paragraph 3.C.

. Resume flights.

- If there is no "B" marked:

. Before resuming flights, comply with paragraphs 3.A., 3.B.1., 3.B.2.a.

and 3.C.

Non-installed equipment

- If there is a "B" marked, the servo-co ntrol is equipped with a compliant

input lever bearing.

. Leave as is.

- If there is no "B" marked:

. Comply with paragraphs 3.B.4.a. and 3.C.